5.3 Alarms and indicators
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Resolutions - Maritime Safety Committee - Resolution MSC.74(69) - Adoption of New and Amended Performance Standards - (Adopted on 12 May 1998) - Annex 2 - Recommendation on Performance Standards for Track Control Systems - 5 Operational requirements - 5.3 Alarms and indicators

5.3 Alarms and indicators

  5.3.1 Failure or reduction in power supply

In case of failure or reduction of power supply to the track control system which effects its safe operation an alarm should be given.

  5.3.2 Position monitoring alarm

An alarm should be given when the position monitor detects a deviation beyond a preset limit.

  5.3.3 Heading monitoring alarm

An alarm should be given when the heading monitor detects a deviation beyond a preset limit.

  5.3.4 Failure and alarm status of sensor

In the case of any failure or alarm status received from the position-fixing sensor or the heading sensor in use:

  • .1 an alarm should be generated at the track control system;

  • .2 the system should provide guidance of the user to a safe steering mode; and

  • .3 a back-up navigator alarm should be given if a failure or alarm status is not acknowledged by the officer of the watch within 30 seconds.

Fall-back procedures consequential to the failure and alarm conditions are states in section 9.

  5.3.5 Use of faulty signals

It should not be possible to select any sensor signal tagged with a fault or alarm status.

  5.3.6 Cross track alarm

A cross track alarm, should be provided when the actual position deviates from the track beyond a preset cross track limit.

  5.3.7 Course difference signal

An alarm should be given if the actual heading of the ship deviates from the track course beyond a preset value.

  5.3.8 Low speed alarm

If speed through the water is lower than a predefined limit necessary for steering the ship an alarm should be given.

Parent topic: 5 Operational requirements
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